Malicious PDF — malware analysis report

Static analysis result for SHA-256 be17070edb98c7f9…

MALICIOUS

PDF

83.2 KB Created: 2021-07-07 11:53:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7372c4b682e043c50fbec1f54b579ef3 SHA-1: 30056ca3fa31d42d92da787dca2ca15b029fc1dc SHA-256: be17070edb98c7f914d3beb79b730f6515099a8272193cf225760950889f2321
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded URLs, many of which point to compromised CMS upload directories or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, but the link farm structure itself is the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/22aa5c65417ba4f337f45c3c713851eb/mugafinidezofi.pdf In PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/132d82f976d124330ec3a9a66ce5a281/mawumilodeki.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/83647508883.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/11627d7b9de4944fe3c171d531a8ca4a/jeviromoxunivikufupoti.pdfIn PDF document text
    • https://tavio.ru/files/file/kewarazi.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/8f70d7245dcfa10e2c4d96ad54c0439a/pejitugoje.pdfIn PDF document text
    • http://pagyesa.org/userfiles/file/20210701185228.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e77a9efc43---34092065259.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/df4mmdiu7kb3afo6lur1g0qs6s/kireket.pdfIn PDF document text
    • https://familienarbeit3plus.ch/userfiles/files/85741843813.pdfIn PDF document text
    • http://ahsaipu.com/v15/Upload/file/2021511636238618.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d2b513edb24---mapejaki.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/160a5cf0912a35---jixotunegobijomeforos.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d0b0d774a---bawetewuginaxozokumamumol.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b02b393a6---42621154174.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/61614430920.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/vabomonili.pdfIn PDF document text
    • https://adikketiga.com/contents//files/xezokedapatapijike.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/7c38e9c0438a93810551349886067aac/25784142134.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/b5b499997bd150a7a5f33836ce7857bd/74750687391.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/bogarub.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/17090059434.pdfIn PDF document text
    • http://tate79.com/clients/868750/File/97497574530.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=the+late+bloomer+full+movie+onlinePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D1 10580 bytes
SHA-256: 455c150be5b58cafd7aa1c606ea052480980102d48fffefe3088f6b324fef4fd
font_01_sfnt_off0000fbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBD 16872 bytes
SHA-256: 520e06c2957eefdb183e78c1ca30b73e26e12ae05badac4e5a1cf4521a19e757
font_02_sfnt_off0001278c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1278C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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